Chapter 2 videos

2.2/ 2.3 https://www.educreations.com/lesson/view/third-lesson-2-2-2-3/39708493/?s=qfn0fj&ref=link

2.4/ 2.5 https://www.educreations.com/lesson/view/third-lesson-2-4-2-5/39708509/?s=SjV2Vj&ref=link

2.6  https://www.educreations.com/lesson/view/third-lesson-2-7/39736794/?s=jBX6Bg&ref=link